Implement Phase 2 Frontend with Ant Design and verify Data Ingestion

- Created `frontend/` React+Vite app using Ant Design (Dark Theme).
- Implemented `App.jsx` to display listening history and calculated "Vibes".
- Updated `backend/app/ingest.py` to fix ReccoBeats ID parsing.
- Updated `backend/app/schemas.py` to expose audio features to the API.
- Updated `README.md` with detailed Docker hosting instructions.
- Added `TODO.md` for Phase 3 roadmap.
- Cleaned up test scripts.

frontend/.gitignore

@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?